HELICLNA. 193 



SYNONYMS AND REFERENCES. 



Helicina Hanleyana PFEIFFER, in Proc. Zool. Soc. 1848, p. 122 ; Mon. Pneum. 



Viv. i. 376; ii. 203. 



CHEMNITZ, ed. 2, p. 45, pi. ix. figs. 7, 8. 

 GRAY- et PFEIFFER, Brit. Mus. Phau. p. 302. 



Remarks. I have not seen this shell. The original 

 description is given above, and a fac-simile of the figures 

 from Chemnitz, ed. 2. 



HELICINA OCCULT A SAY vol. ii. p. 356, pi. Ixxiv. figs. 1, 2. 



Helicina occulta SAY (Binney's ed.) pp. 36, 37, pi. xlvi. figs. 4-6. 



CHENU, Bibl. Conch, iii. p. 59, pi. xv. figs. 2 b, 2 c, 2 d. 



DEKAY, N. Y. Moll. p. 82. 



PFEIFFER, Mon. Pneum. Viv. i. 347; ii. 185. 



CHEMNITZ, ed. 2, p. 18, (1846), pi. iv. figs. 11, 12, (1850). 



GRAY and PFEIFFER, Brit. Mus. Phan. p. 250. 

 Helicina rubella GREEN, 1. c. 



This is probably the species referred to in Kirtland's 

 Ohio Hep. p. 199 (1838). 



I am inclined to consider Hel. rubella Green as a syno- 

 nym of this species. From Sheboygan, Wise., I have 

 received an apparently recent specimen of it collected by 

 Mr. Lapham. Green's description is as follows : 



HELICINA RUBELLA. Shell more than inch broad, subglobose; 

 spire slightly elevated, conical ; whorls 5 or 6, with minute oblique 

 strife ; sutures slightly impressed ; epidermis smooth and of a light 

 brick-red color ; aperture irregularly lunate, or semi-elliptical ; outer 

 lip white, callous, and partially reflected near the base ; operculuni cor- 

 neous, smooth. Hills, western Pennsylvania. 



HELICINA ORBICULATA SAY vol. ii. p. 352, pi. Ixxiii. Ixxiv. fig. 3. 



Helicina orbiculata SAT, (Binney's ed.) pp. 7, 36, pi. xlvi. figs. 1, 2. 



CHENU, Bibl. Conch. 3, p. 58, pi. xv. fig. 2, 2 a, 2 c. 

 DE!VAY, N. Y. Moll. p. 82. 



CHEMNITZ, ed. 2, p. 74, (1846), pi. x. figs. 32, 33. 

 PFEIFFER, Mon. Pneum. Viv. i. 375; ii. 199, (excl. H. ru- 

 bella). 

 GRAY and PFEIFFER, Brit. Mus. Phan. p. 272, not of Sow- 



ERBY. 

 JOURNAL B. S. N. H. 25 



